Lathe-chuck.



W. E. CLARK. LATHE CHUCK. APPLICATION FILED Aug. 18, 1911.

1,025,784. Patented May 7, 1912.

2 8HEETB-SHEET 11 W-B. CLARK. LATHE CHUCK. APPLICATION FILED AUG. 18,1911.

1,025,784. Patented May 7,1912.

2 BHEETS-SHEET 2.

6 16 1 6 M if 1 {I a: l 1 9 iii ii E I) V f? Q Qhtmwoeo 7 Boise, in thecounty of Ada and WILLIAM a. crater; or noise, IDAHO.

LATI EIE-GHUG1Q roaavsa.

Application filed mus .18,

To all whom it may concern:

Be it known that I','VVILL1A1\I E. (Ins st, a citizen of the UnitedStates,'residing at State of Idaho, have invented certain new and usefulImprovements in Lathe-Chucks; and ill do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethesame. I

The present invention relates to" lathe chucks, and has for its purposeto provide a device of that character'whichis capable of holding regularor irregular pieces of uniform or different sizes in positions forworking, and one wherein the desired adjustments may be easily made andeffectively secured in set position.

With these and other objects in view the invention consists in thearrangement and combination of parts hereinafter claimed,

and while the invention is not restricted to the exact details shown anddescribed, still for the purpose of disclosure reference is bad to theaccompanying drawings, in which like reference characters designate thesame parts in the several views, and in which Figure 1 is a frontelevation of the device. Fig. 2 is a side elevation thereof. Fig. 3 is afront elevation of the support, and; Fig. 4 is a central verticalsectional view of the device, with the chuck blocks in elevation.

Referring to the construction in detail and wherein like characters ofreference indicale' corresponding parts in the different views shown,the construction consists in a rcvoluble support 1 having a centralscrewthreaded aperture 2 for mounting the same on its'supporting shaft.The outer face of the support 1 is provided with a plurality of equallydistant and radially disposed .'e-

- cesses 3 cmmter-slmk therein. Said recesses 3 extend to the edge ofthe support 1. and at such points have substantially thatdesignindicated by the churn lcr -l in liz. 2, and s are slugghl'ly in--clincd or beveled fora ently described. p

A chuck block holder .3 is mounted in each of the recesses ll, i:-;provided \\'lll\ a relatively short sll l '5' that extends throngrh anaperture 8 in ll Each of the shal"; "raw-lhrcadcd lo receive a lockingnut 5i, ruruugrh the medium ol Specification of Letters Patent.

purpose to be pres- 1911. Serial no. erases. I

which the chuck block holders (3 are secured within the recesses 3 atdifferent angular positions. The sides 10 of the members 6 are alsoinclined or beveled complementary to the sides 5 of the recesses 3, thepurpose whereof being to secure a wedge action be tween the sides of thechuck block holders and recesses, through the tightening means (7 and 9)when said holders have been set to the adjusted positions.

Each of the chuck block holders 6 is provided with a chuck block 11 ofany appro Said blocks 11 arepriate construction. adaptedto be radiallyadjusted within the holders 6 with r spect to the support 1 through the--medium of ribs or guides 1.2 formed in the holders 6, and which fitwithin grooves or guideways 13 formed in theblocks 11. The under side ofeach of the blocks 11 is formed with a half screw-tl'lreaded way 1.4 toreceive a screw-threaded shaft 15, and said shafts 15 are mounted torotate in the chuck block supports 6. The shafts 15 have the inner andouter ends thereof squared as at 16, wherebythe shafts may be turnedthrough the medium of a suitable tool for effecting radial adjustment-Of the blocks 11, as above stated. And this radial adjustment of theblocks 11 may be effected through the outer squared ends of the shafts15 since the rotatable members 6 project beyond'the edge of the support1, via, the opening 4-, and thereby afford a. relatively great arcuatedistance through which said shaft ends may be engaged.

From the foregoing it will be readily understood that the blocks ll may,through the means for radial adjustment, be set. at the requiredrelative distances for holding regular pieces of different sizes forworking, and through the angular adjustment attainable by the chuckblock SUPPOHZS (3 the chuck blocks ll may be set. at various angularpositions for holding irregular pieces of different sizes.

it is obvious that those skilled in the art may vary the details ofconstruction arid arrangicmei-ll. of parts without departing from thespirit ol my invention, and therefore 1 do not wish lo be limited tosuch features except as may he required by the claims.

\Vliat l claim l. in a-lalhc chuck, the combination of a supporl, apluralily ol clutch-blocks mounted to have adjuslmcnl' radially ol saidsud Patented llll'ay a, rare.

port; and pivotal mounts for said chuckadjustment of the chuck-blocksradially of blocks whereby to efl'ect angular adjustment the support,substantially asl described.

thereof, substantially as described.- 5. In a lathe chuck, thecombination of a 2; In a lathe chuck, the combination of a supportprovided with a plurality of coun- 5 support; a plurality of chuck-blockholders ter-sunk recesses having lnclined sides androtatably mounted onsaid support; and extending to the edge of-said support, apluchuck-blocksfadjustably mounted on said rality of chuck-block holdershaving inholders, substantially as described. clined sides mounted insaid counter-sunk 3. In a lathe chuck, the combination of, a recessesand extending beyond the edge of support; a plurality ofchuck-block'holders said support, said holders having each a rotatablymounted on said support; means shaft journaled in the support to allowof for securing said rotatable holders at differangular adjustnientofsaid holders; nuts on cut angular positions; and chuck-blocks Ltd saidshafts for securing said adjustments;

ustably mounted on said holders, substanchucleblochs mounted on saidholders; and tially as described. screw-threaded shafts journaled insaid 4:. In a lathe chuck, the combination of a holders and adapted toeITect adjustment of support; a plurality of chuck-block holders thechucleblocks radially of the support, mounted in said support; each ofsaid hold-'- substantially described. \ers having a shaft journaled inthe support In testimony whereof, I afiix my sigma.-

vhereby said holders may be angularly adture, in presence of twoWitnesses.

usted; a nut screw-threaded on each of said shafts for securing saidadjustments, a WILLIA'II CLARK chuck-bloelron each of said rotatablehold- I Witnesses:

ers'; and a screw-threaded shaft mounted in l Cnnnmar ll. Ronnn'rs,

each of said holders and adapted to effect l Gnoncn Hosnirns.

